The Research Design and Standards Organisation have checked factors such as vibration from trains and passenger comfort before issuing the certificate.
Metro Rail Project Office has been functioning in Gopalapuram till now. As the construction at Koyambedu has been completed, this Gopalapuram office will be shifting to Koyambedu.
Chennai Metro Rail Project will have 42 coaches. It was planned that 9 coaches will be manufactured by the company, Alstom, in Brazil, and shipped to Chennai.